The question that changed my life
Which of the two squares seems lighter to you, A or B? For me, B is clearly lighter. And you surely agree. But the strange fact is that both squares… are actually identical. Today we will talk ...
Should we stop eating meat?
Is it wrong to eat animals? In this episode, I’m going to talk about the consumption of animal products. We will discuss both myths and truths about climate change, factory farms, health, pande...
The most lethal weapon
Have you ever wondered what the destructive power of humanity is? Today we will talk about the history and physics behind bombs, explore what is currently the deadliest bomb, and how many of ...
The (anti)social network
Have you ever watched a WhatsApp group turn into a battlefield? Or gotten entangled in a never-ending fight on Facebook? Or perhaps you have an uncle who shares increasingl...
Should the rich help the poor?
Imagine that we put all the people in the world in a row, ordered from the poorest to the richest. At one extreme we would have people living in extreme poverty in a country like Somalia. And a...
Climate change: The solution
Climate change is already a reality. Our goal is not to prevent it from happening, but to prevent it from being too devastating. In this episode, I will talk about the four most effective solut...
Climate change: The problem
If you already understand the science of climate change, in this video I’m not going to tell you anything that you haven’t already heard a thousand times. And if you’re a climate change denier,...
Introductory talk to effective altruism
In this presentation I introduce effective altruism, talk about the world’s most pressing problems and how we can help tackle them.
Astrology or astronomy?
Many people firmly believe that astrology is capable of predicting our destiny. And other people believe that astrology is a big hoax without any scientific basis. Today I am going to prove that ...
Our mistakes have names
When we look back in history, we see things that were considered perfectly normal at the time but which now seem absolutely atrocious to us, such as the battle of gladiators, executions in the Mi...
Love, death and black holes
Today is Valentine's day! So I'm going to tell you an unforgettable, romantic and passionate love story, which has marked a before and after in our way of understanding the Universe. It's the story...
How can you save a life?
The end of the year is coming! And with it come the excitement, the grapes and the projects for the new year. So in this episode I'm going to propose a very ambitious project: Save a life. [capt...
How has the world changed since I was born?
Today is my birthday. On this day, 36 years ago, planet Earth welcomed forth one more small human. What was the world like back then? Which things have improved since that day? And which things h...
Existential risks
Imagine that an American bomber jet has an accident whilst flying over the coast of Andalusia. Imagine that the plane has thermonuclear bombs on board, each one with a destructive power 100 tim...
The end of the Universe
Everyone knows that the Universe began with the Big Bang. But what is seldom spoken about is the end of the Universe. In this episode, we’re going to answer one of the most profound questions w...
The radiation we should be worried about
Every second you are being bombarded by various types of radiation. One of them should concern us. You live in a sea of radiation. If you use a mobile phone, you're being irradiated by micro...
The most important pixel in History
What a day... After a long day of work, I head out to do the shopping. I'm dragging a trolley and several bags to my house when it starts to rain. And to top it off, just as I'm about to reach ...
This is Altruphysics
A bit of astrophysics and a bit of altruism. Welcome to this space which I've called "Altruphysics". In this episode, I'll explain where the name comes from, and why I created this channel. ...
Then you get older – music video
Then You Get Older is an original song by Mel Brennan, for which I added piano, did the mix and wrote part of the arrang...
How to choose our contribution to the world – presentation
“How to choose our contribution to the world” is a talk I gave about effective solutions to human and animal suffering on a global scale, from the perspective of effective altruism.